Ah, thanks for the ongoing advice. I've more closely examined the calipers and discovered more rust and junk on their surfaces, and the process of forcing them in and out seems to have let some air into the system, as the pedal is spongier than I like. I'm going to get some rebuilt calipers (I'd rest easier, and the price is pretty similar to rebuilding myself) and tires all around..which will complete my good deeds for the front of the car. Or at least it better.
I'm thinking of 175/70/14 Kumho Power star 758 tires; I've heard the size recommended for B roadsters (that or 185, but that seems to be more for a GT), and good things about Kumho. Any opinions on these?